State var nil in SwiftUI with async await (CloudKit)

Question

I haven't done much with the changes to SwiftUI concurrency with async await but I have gone through all the documentation and I really don't get what's going on here:

I try to share my CloudKit database with other users, I implemented basically 1:1 what Apple is showing here in the sample code https://github.com/apple/sample-cloudkit-sharing/blob/main/Sharing/Views/ContentView.swift https://github.com/apple/sample-cloudkit-sharing/blob/main/Sharing/Views/CloudSharingView.swift

this is my code

                Button("share") {
                    Task {
                            try await shareObjects()
                    }
                }
                .sheet(isPresented: $isShowingShareView) {
                    shareView()
                }

    @State private var activeShare: CKShare?
    @State private var activeContainer: CKContainer?
    
    func shareObjects() async throws {
        
        var objects = Array(viewContext.registeredObjects)
        do {
            let (something, share, container) = try await PersistenceController.shared.container.share(objects, to: nil)
            activeShare = share
            activeContainer = container
            isShowingShareView = true
        }
        catch {
            print(error)
        }
        
    }
    
    private func shareView() -> CloudSharingView? {
        guard let share = activeShare, let container = activeContainer else {
            print("its nil")
            return nil
        }

        return CloudSharingView(container: container, share: share)
    }

The share view should come up in the sheet, but it just comes up empty because share and container are nil when shareView() is called (where it prints its nil). When setting breakpoints I see there is data in there - then not anymore, I suspect some kind of issue where this view just knows nothing about my data but why? I also added @MainActor for the methods just to make sure its really on the main thread, but it is. The share action does work, I can see it in CloudKit Dashboard

Any ideas? Thank you!